Gce Model Questions Vol1 2017 Biology Question 33
Practice objective / multiple choice question 33 from the 2017 Gce Model Questions Vol1 Biology examination.
In a terrestrial ecosystem the net primary production (NPP) is \(2000\) g C m\(^{-2}\) yr\(^{-1}\). Energy is transferred from plants to herbivores with an efficiency of \(10\%\), from herbivores to primary carnivores with \(15\%\), and from primary carnivores to secondary carnivores with \(20\%\). A secondary carnivore species requires \(0.5\) g C per individual per day. Assuming the ecosystem covers exactly \(1\) ha (\(10\,000\) m\(^{2}\)) and that all the energy reaching the secondary‑carnivore level is used only by this species, calculate the maximum sustainable number of individuals of the secondary carnivore.
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This is Gce Model Questions Vol1 2017 Biology Question 33. It is one of the objective questions from the 2017 Gce Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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